I9506XXUDOJ2 Android 5.0.1 Lollipop official firmware for
Samsung Galaxy S4 LTE-A GT-I9506 is out and the users can now manually download the firmware zip file from here at
NasirTech. Samsung time to time releasing software update for all their Android
Smartphone and tablet devices and it is always recommended to update the latest
available firmware for your device as with every new firmware version Samsung introduces fixes
for bugs (if any), improvement in overall OS performance and sometime introduces
new features. Continue reading this page to find I9506XXUDOJ2 download
link along with flashing instructions and rooting guide (if available).

(Firmware for rest of the countries and carrier will be added here when available)

[Please don't ask for any torrent download link for the above firmware. However, if the above link doesn't work, you can mention in comment below, we'll try to provide you with other download mirror (if available)]

I9506XXUDOJ2 Installation Methods:

There are several ways by which you can update the XXUDOJ2 firmware on your Galaxy S4 LTE-A I9506 such as- through Samsung Kies utility (from your PC), Via OTA (Over the Air, directly from your device using WiFi) and Odin method (manually download firmware and flash through Odin). Below you'll find all the three methods.

How to Update Official Firmware on Galaxy S4 LTE-A GT-I9506 via OTA (Over the Air):

Go toSettings-About, and tap on the Update Option from there (If its show“The latest update have already been installed”message, then your device haven’t receive any OTA yet, check back later or try installing through Kies.)

Tap OK to start the download and installation process

Once done, your device will reboot automatically

How to Update Official Firmware on Galaxy S4 LTE-A GT-I9506 through Samsung Kies Utility:

At the Samsung Kies home screen, you’ll seeNew Firmware Upgrade is availablenotification (If it show-“This is the last firmware”, then your device haven’t received the latest firmware on Kies, check back later or try flashing manually through Odin)

Click on the Firmware Upgrade button to start the update process

Follow onscreen instructions

Once done, your device will be reboot automatically

After reboot, you can disconnect your device from PC

How to Update I9506XXUDOJ2 Firmware on Galaxy S4 LTE-A I9506 through Odin:

Kies and OTA are the official way to update firmware but most of us prefer manual way
to update official firmware. So, below you’ll find step by step manual
guide to update the XXUDOJ2 5.0.1 Lollipop firmware on your Galaxy S4 LTE-A I9506
through Odin software on your PC or Laptop.

Warning!

"The firmware is released only for the Samsung Galaxy S4 LTE-A GT-I9506 model, so don’t try this in any other android device. Check your device model number from Settings-About Phone. Also the tutorial is based on Windows PC. NasirTech is not responsible if anything wrong happens to your device after following this guide, try this at your own risk".

Points to be noted:

1) Check battery percentage, your device should have at least 60% battery
power

2) Turn on USB Debugging mode, go to Settings-General-Developer
Options (As the Developer options are hidden by default on all Android
device running on Android 4.2 or up, So go to Settings-General-About on
your Galaxy S4 LTE-A and tap Build Number for 7 times to visible the
Developer options.) See the image below.

3) Switch off and boot Galaxy S4 LTE-A I9506 into Download Mode by
pressing and holding the Volume Down+Home+Power buttons (long press until the boot
screen appear), now press Volume Up key to proceed to Download Mode.

4) Extract the downloaded Odin3.09 zip file and run the Odin3 v3.09.exe file as
an administrator (Right click on the .exe file and click on Run as
administrator)

10) Now, click on the Start button to begin the installation process, wait few
moments.

11) Once completed, you would see “PASS!” message in ID:COM port having green
background

12) Your device should automatically reboot after completion

13) You can now disconnect your device from computer

14) Finish

Hope you successfully completed the update process. If you followed everything as mentioned in the above tutorial, then your device should now running on Android 5.0.1 Lollipop build version number XXUDOJ2 . You can verify the firmware update details from Settings-About Phone.

If anything goes wrong, your device may stuck at booting animation. If your Galaxy S4 LTE-A GT-I9506 stuck at boot animation screen for more than 10 minutes, then follow these instructions:

Go to Recovery Mode by pressing and holding the Volume Up+Home+Power buttons together.

Now, perform Wipe Data/Factory Reset and Wipe Cache Partition task before selecting the reboot system now option. In Recovery Mode use the Volume keys to navigate between options and Power key to select any option.

Root I9506XXUDOJ2 5.0.1 Lollipop Firmware:

We've also arranged a step by step guide to root
I9506XXUDOJ2 5.0.1 Lollipop firmware running on Samsung GT-I9506. Go to the following link for the rooting guide.